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低功耗、3 1/2位ADC,带有显示/保持和直接LCD驱动器

产品详情

主要特征

Parametric specs for Display-Oriented ADCs
Resolution (±Counts) 2000
# Input Channels 1
Conv. Rate (ksps) (max) 0.0025
Data Bus 7-Segment
Diff/S.E. Input Diff. Only
External VREF (V) (min) 0
External VREF (V) (max) 9
Bipolar VIN (±V) (max) 9
Package/Pins MQFP/44
PLCC/44
Budgetary
Price (See Notes)
5.59
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参量

Parametric specs for Display-Oriented ADCs
Resolution (±Counts) 2000
# Input Channels 1
Conv. Rate (ksps) (max) 0.0025
Data Bus 7-Segment
Diff/S.E. Input Diff. Only
External VREF (V) (min) 0
External VREF (V) (max) 9
Bipolar VIN (±V) (max) 9
Package/Pins MQFP/44
PLCC/44
Budgetary
Price (See Notes)
5.59

主要特征

  • Power Dissipation Guaranteed Less than 1mW–9V Battery Life 3000 Hours Typical
  • Hold Pin Allows Indefinite Display Hold
  • Guaranteed First Reading Recovery from Overrange
  • On-Board Display Drive Capability—No External Circuitry Required
  • High-Impedance CMOS Differential Inputs
  • Low Noise (< 15µVP-P) Without Hysteresis or Overrange Hangover
  • Clock and Reference On-Chip
  • Zero Input Gives Zero Reading
  • True Polarity Indication for Precision Null Applications
  • Key Parameters Guaranteed Over Temperature

应用/用途

  • Conductance
  • Current
  • Material Thickness
  • Pressure
  • Resistance
  • Speed
  • Temperature
  • Voltage

描述

The MAX136 is a monolithic analog-to-digital converter (ADC) with very high input impedance. It differs from the Maxim ICL7136 in that the MAX136 provides a Hold pin, which makes it possible to hold or "freeze" a reading. The MAX136 directly drives a nonmultiplexed liquid crystal (LCD) display, requiring no external drive circuitry. With minor external component changes, it is pin compatible with the ICL7116 but with significantly reduced power consumption, making the MAX136 a superior device for portable systems.

Versatility and accuracy are inherent features of this ADC. The dual-slope conversion technique automatically rejects interference signals common in industrial environments. True differential inputs allow direct measurements of bridge transducer outputs or load cells. The zero-integrator phase eliminates overrange hangover and hysteresis effects. The MAX136 offers high accuracy by lowering rollover error to less than one count and zero reading drift to less than 1µV/°C.

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MAX136:引脚配置 MAX136:引脚配置 Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心